Bookmarked for suggesting a good use of a QR code: put it on an artefact for people to get a printable version.
I full-heartedly agree with Jeremy: print stylesheets are one more feature of universal website design, and they go together rather well with QR codes …no matter how ugly, abused and underused they are.
There luckily is an alternative to Google’s Chart API (whose shutdown had been announced for …